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Journals / Turkish Journal of Zoology / 2007 / Cilt: 31 - Sayı: 4

Growth and Mortality of the Brown Trout (Salmo trutta L.) Population from Upper Aksu Stream, Northeastern Anatolia, Turkey

Kuzey Doğu Anadolu Yukarı Aksu Çayı Alabalık, Salmo trutta L. Populasyonunda Büyüme ve Ölüm Oranları

Murat ARSLAN
Ayhan YILDIRIM
Serdar BEKTAŞ
Ali ATASEVER
Pages
337–346
Publication Date
2007-04-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Length-weight relationships were W = 0.015 x L2.939, W = 0.015 x L2.928, and W = 0.015 x L2.932 for females, males, and overall, respectively.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Age, sex, mortality, and growth characteristics of brown trout (Salmo trutta) from the upper Aksu Stream were investigated.
📊
Key Findings & Data:Females and males comprised 52.13% and 47.87% of the population, respectively.
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Conclusion & Impact:Length-weight relationships were W = 0.015 x L2.939, W = 0.015 x L2.928, and W = 0.015 x L2.932 for females, males, and overall, respectively.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Salmo trutta · Do¤uanadolu · Çoruh Nehri

Abstract

Age, sex, mortality, and growth characteristics of brown trout (Salmo trutta) from the upper Aksu Stream were investigated. Females and males comprised 52.13% and 47.87% of the population, respectively. Age ranged from 1 to 8. The fork length (L) and total weight (W) were 5.7-22.8 cm and 2.9-142.6 g, respectively. Length-weight relationships were W = 0.015 x L2.939, W = 0.015 x L2.928, and W = 0.015 x L2.932 for females, males, and overall, respectively. The estimated von Bertalanffy growth parameters were Linfinity = 33.27 cm, K = 0.107 y-1, and t0 = -1.046 y for females; Linfinity = 29.50 cm, K = 0.143 y-1, and t0 = -0.562 y for males; and Linfinity = 32.13 cm, K = 0.124 y-1, and t0 = -0.724 y for overall. Phi prime (F`) was 2.09 for females, males, and overall. Instantaneous total mortality rate (Z) was 0.58 y-1.

Özet

Yukar› Aksu Çay›’nda yaflayan alabal›klar›n (Salmo trutta) yafl, boy, cinsiyet, büyüme ve ölüm oranlar› incelenmifltir. Difli ve erkekler populasyonun s›ras›yla % 52,13 ve % 47,87’sini olusturmufltur. Yafl 1-8 aras›nda tespit edilmifltir. Çatal boy (L) ve toplam a¤›rl›k (W) 5,7-22,8 cm ve 2,9-142,6 g aras›nda de¤iflim göstermifltir. Boy-a¤›rl›k iliflkisi difli, erkek ve tüm populasyon için s›ras›yla W = 0,015 × 2,939, W = 0,015 × L 2,928 ve W = 0,015 × L 2,932 olarak hesaplanm›flt›r. Von Bertalanffy büyüme parametreleri difliler için; L∞ = 33,27 cm, K = 0,107 y›l-1, t0 = –1,046 y›l, erkeler için; L∞ = 29,50 cm, K = 0,143 y›l-1, t0 = -0,562 y›l ve tüm populasyon için; L∞ = 32,13 cm, K = 0,124 y›l-1, t0 = –0,724 y›l olarak tespit edilmifltir. Fi Üssü (Φ`) difliler, erkeler ve tüm bireyler için 2,09 olarak hesaplanm›flt›r. Anl›k toplam ölüm oran› 0,58 y›l-1 olarak tespit edilmifltir.

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Cite This Article

ARSLAN, M., YILDIRIM, A., BEKTAŞ, S., ATASEVER, A. (2007). Growth and Mortality of the Brown Trout (Salmo trutta L.) Population from Upper Aksu Stream, Northeastern Anatolia, Turkey. Turkish Journal of Zoology, Cilt: 31 - Sayı: 4, 337–346. https://ajindex.com/articles/177498

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